Schematic of example stm32l0 board
C1
Capacitance
10uF
C2
Capacitance
10uF
C12
Capacitance
10uF
C11
Capacitance
10uF
U3
J3
J2
J6
J1
R2
LED2
R1
Resistance
10KΩ
R9
R3
Resistance
10KΩ
R10
U2
U1
M1